22221526 has 8 divisors (see below), whose sum is σ = 35086680. Its totient is φ = 10525968.

The previous prime is 22221523. The next prime is 22221527. The reversal of 22221526 is 62512222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 22221497 and 22221506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292351 + ... + 292426.

It is an arithmetic number, because the mean of its divisors is an integer number (4385835).

Almost surely, 2^22221526 is an apocalyptic number.

22221526 is a deficient number, since it is larger than the sum of its proper divisors (12865154).

22221526 is a wasteful number, since it uses less digits than its factorization.

22221526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584798.

The product of its digits is 960, while the sum is 22.

The square root of 22221526 is about 4713.9713618137. The cubic root of 22221526 is about 281.1412856538.

Adding to 22221526 its reverse (62512222), we get a palindrome (84733748).

The spelling of 22221526 in words is "twenty-two million, two hundred twenty-one thousand, five hundred twenty-six".